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Tooling and method for leak rate detection of high-pressure helium mass spectrometry in diaphragm valves

A technology of helium mass spectrometer and diaphragm valve, which is applied in the field of diaphragm valve detection tooling, can solve the problems of long detection time, complicated assembly, poor sealing performance, etc., and achieve the effect of short detection time, simple assembly and high sealing performance

Active Publication Date: 2021-07-20
XIAN AEROSPACE PROPULSION INST
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of complex assembly, poor sealing, low reliability and long detection time in the prior art, and provide a tooling and method for leak rate detection of high-pressure helium mass spectrometry of diaphragm valves

Method used

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  • Tooling and method for leak rate detection of high-pressure helium mass spectrometry in diaphragm valves
  • Tooling and method for leak rate detection of high-pressure helium mass spectrometry in diaphragm valves
  • Tooling and method for leak rate detection of high-pressure helium mass spectrometry in diaphragm valves

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] Such as Figure 1 to Figure 4 As shown, a tooling for leak rate detection of high-pressure helium mass spectrometry of a diaphragm valve, including a first nozzle 1, a second nozzle 2, and an annular leak detection component 3;

[0034] The annular leak detection assembly 3 includes an annular sleeve 7, a straight pipe section 8 and a straight joint 9; the straight joint 9 communicates with the annular sleeve 7 through the branch pipe section 8;

[0035] The first nozzle 1 and the second nozzle 2 are all provided with a radial connecting plate 11, and the inner side of the radial connecting plate 11 is respectively provided with an annular boss 12, and the inner diameter of the annular boss 12 is larger than that of the diaphragm valve to be tested. Two annular bosses 12 are arranged correspondingly; two radial connecting plates 11 are ...

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Abstract

The invention relates to a diaphragm valve detection tool, in particular to a diaphragm valve high-pressure helium mass spectrometer leak rate detection tool and method. The purpose of the present invention is to solve the problems of complex assembly, poor sealing, low reliability and long detection time in the prior art. The detection tooling mainly includes the first nozzle, the second nozzle, the annular leak detection component, the end face O-ring and the radial O-ring, etc. The straight-through joint is connected to the annular casing through the straight pipe section; the first and second nozzles The nozzles are butted by bolts; the annular sleeve is sleeved at the butt joint; the end face O-rings are respectively set between the first and second nozzles and the diaphragm valve to be tested; the outer side of the two annular bosses and the inner side of the annular sleeve Radial O-rings are arranged between them. The tooling and method for leak rate detection of diaphragm valve high-pressure helium mass spectrometry of the present invention can satisfy pressure conditions, avoid product damage, and have simple assembly, high sealing performance, short detection time and high reliability.

Description

technical field [0001] The invention relates to a diaphragm valve detection tool, in particular to a diaphragm valve high-pressure helium mass spectrometer leak rate detection tool and method. Background technique [0002] The diaphragm valve of the pressurized delivery system on the aerospace vehicle is located upstream of the filter and has the characteristics of "reverse pressure and forward blasting". The diaphragm valve can isolate the steam generated by the propellant and avoid spontaneous combustion when oxygen and combustion steam meet. When the pressurization system is working, the high-pressure gas from the upstream normally opens the diaphragm valve and enters the storage tank for pressurization. Therefore, the tightness of the diaphragm valve is crucial to the entire pressurized delivery system. [0003] In order to verify the sealing performance of the diaphragm valve, a helium mass spectrometry leak test is usually required. During the test, in order to avoid ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/22
CPCG01M3/205G01M3/224
Inventor 冯子政权保尹渭丹苏向东韩小斌赵越彭中伟
Owner XIAN AEROSPACE PROPULSION INST
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